Interesting. My S2 core 2 is 48.6 with the following aftermarket stuff, one up carbon bar, TR36 wheels, Tacky Chan/MM radial(both trail casing), e13 helix race alloy cranks(a little lighter than praxis cranks), RS lyrik/SD, X0 cassette, RF atlas pedals, Hope GR4 brakes. I think Forbidden's...